Duh-Forgetting Hifi Basics 101-crossovers


OK.Sold hi-end for 6 years.Said a lot of stupid stuff here maybe occasionally something with some salience (yeah yeah -don't replay "Don't be on it chazz-I can imagine).But now spacing on bi-amp basics.Know if you have mono conversion switch you can double power vertically.And remember that horizontally you can get 150 wpc summed power from two amps.Also know that one needs level control if using two different amp putting out n different amounts of current and this is feature of many crossovers.But if using identical amps and hooking one amp to tweeter posts and one to bass posts (or tri-amping) and removing jumper why is it that one needs x-over to to limit full range signal being sent from being sent to either set of drivers.
Isn't the the crossover still in the signal path creating it's high low pass?And if I need a means to low/high pass how can I do this as cheaply as possible.Amps are either two Denon 1500's (150 wpc) or PS Audio Delta's at 100 wpc.Neither can be converted to mono for vertical bi-amping and think though this is done many times for greater power yet I think better results are are gotten through going horizontal.
Cheapest and lest efficient (power robbing) wold be passive in line filters between pre and amps.But this set up is not worth cost of a Bryston 10B or a Marchand tube unit.
So 1) why with same amps do I need a x-over and 2) what's cheapest way to hook up my amps and two ways yet retains acceptable sound quality i.e. best cost to perfromace ratio.It's been a long time since I have thought about issue and through i was explained to me as a kid before I worked in shop (where we rarely set up bi-amp set ups.This is embarrassing it's so basic so be gentle as I struggle with early on set Alzheimers.
chazzbo

Showing 1 response by chazzbo

Drew
Thanks
Wasn't sure about he physics of i all but ha been erroneously informed that getting active x-over with correct slope that sounded me right would get 1 1/2 of power total.I have a 80's $1200 (now $300-$400) amp and thought it might be good for a 2 way monitor.Every time I have heard bi-amped 2-way's they sounded better making woofer less strained and less distortion than single amp set ups'.Have looked for cheap x-over in google but most are sub area.But I realize while people go vertical if they have switch.Still think my buddy who had two Denon 1500 low current mid-fi's with a the small crossover from Maggie.Worked with III';s but when I found him 3.6 a sinle Bryston 4 BST blew it away.That set up deserves the qoB (and good sub) and another 4 ST o a pair of 7 mono's or 14 B ST's .
Thanks again
Chazz